1. Introduction  of  Generator OR  Dynamo: https://youtu.be/18SPEL1VkQk

• Principle of  D.C. Generator: https://youtu.be/-fxsgoO5TU4?list=TLPQMDIwOTIwMjAUsTvjKlucow
• a. Dynamo: https://youtu.be/BdWzM38HR-g?list=TLPQMDIwOTIwMjAUsTvjKlucow
• b. DC  generator: https://youtu.be/uShxHAf8XrM?list=TLPQMDIwOTIwMjAUsTvjKlucow

2. The fundamental requirement of a D.C. generator

1. Magnetic field: https://youtu.be/wInt7CU-f0E?list=TLPQMDIwOTIwMjAUsTvjKlucow
2. Armature: https://youtu.be/6UD8iPi9qQI?list=TLPQMDIwOTIwMjAUsTvjKlucow, https://youtu.be/SwEn6DTPyJ8?list=TLPQMDIwOTIwMjAUsTvjKlucow
3. Commutator: https://youtu.be/1o0arEKotzs?list=TLPQMDIwOTIwMjAUsTvjKlucow,  https://youtu.be/6ofkoTYesa8?list=TLPQMDIwOTIwMjAUsTvjKlucow
4. Carbon brush: https://youtu.be/cXScenS6ySo?list=TLPQMDIwOTIwMjAUsTvjKlucow,  https://youtu.be/NwHV9UDAXL0?list=TLPQMDIwOTIwMjAUsTvjKlucow
5. Mechanical energy: https://youtu.be/_CX4jQNUlKs?list=TLPQMDIwOTIwMjAUsTvjKlucow,  https://youtu.be/NFChgzeu-50?list=TLPQMDIwOTIwMjAUsTvjKlucow, https://youtu.be/iu6hmms5vkg?list=TLPQMDIwOTIwMjAUsTvjKlucow
6. Separately Excited Generator:  https://youtu.be/59XhsYybVrY , https://youtu.be/tN2sPA3MKr8, https://youtu.be/59XhsYybVrY ,  https://youtu.be/tN2sPA3MKr8
7. Construction of DC Motor: https://youtu.be/i0NYAgnUH64, https://youtu.be/pBYfOtsswVk
8. Alternator Vs Generator Difference:  https://youtu.be/WrOgH2MCK-M
9. Excitation Method of D.C Motor: https://youtu.be/PFMf_ff29jw
10. DC Series, Shunt and Compound Generator: https://youtu.be/gfVSbDnI1ko
11. Dc shunt generator characteristic: https://youtu.be/8Oefp3CiQMs?list=TLPQMTIwOTIwMjCA5rxrTf04wA
12. Characteristics of d.c. generator: https://youtu.be/PvH2IToYcwE?list=TLPQMTIwOTIwMjCA5rxrTf04wA
13. Short Shunt compound Generator: https://youtu.be/zVBp5Ik2E0U?list=TLPQMTIwOTIwMjCA5rxrTf04wA 
14. Long Shunt Compound Generator:  https://youtu.be/UIPGcKEFhgU?list=TLPQMTIwOTIwMjCA5rxrTf04wA
15. Differential compound and cumulative compound generator:  https://youtu.be/YUw2IPxpELs?list=TLPQMTIwOTIwMjCA5rxrTf04wA
16. Cumulative, Differential compound generator: https://youtu.be/FuiZTh1q6I0?list=TLPQMTIwOTIwMjCA5rxrTf04wA
17. DC Generator And Characteristics Curve:  https://youtu.be/BD-Wwlm6lB8?list=TLPQMTIwOTIwMjCA5rxrTf04wA